.nav {
    display: flex;
    justify-content: space-between;
    height: 40px;
    min-height: 40px;
    background-color: #ffffff;
    position: relative;
  
    &::after {
      position: absolute;
      content: '';
      width: 100%;
      left: 0;
      bottom: 0;
      height: 1px;
      background-color: #e4e4e4;
      transform: scale(1, 0.5);
      transform-origin: center bottom;
    }
  
    .menu {
      display: flex;
      height: 100%;
    }
  
    .menu-item {
      position: relative;
      display: flex;
      align-items: center;
      padding-left: 15px;
      width: 80px;
      box-sizing: border-box;
      color: #666666;
      font-size: 16px;
    }
    .menu-item.active {
      color: #333;
      font-weight: bolder;
    }
  
    .menu-active-bar {
      display: inline-block;
      position: absolute;
      bottom: 0px;
      left: 0%;
      -webkit-transform: translateX(0);
      transform: translateX(0);
      width: 100%;
      transition: 0.2s;
      height: 0px;
      border-radius: 1px;
    }
    .menu-active-bar::after {
      content: '';
      display: inline-block;
      position: absolute;
      bottom: 0px;
      left: 21px;
      width: 20px;
      border-bottom: solid 2px #ffd300;
    }
  
    .menu-comment {
      display: flex;
      align-items: flex-end;
      margin-left: 2px;
      max-width: 31px;
      height: 16px;
      line-height: 1;
      font-size: 10px;
      color: #999;
    }
  
    /* 搜索 */
    .menu-search {
      flex: 0 0 auto;
      display: flex;
      align-items: center;
      /* width: 120px; */
      height: 100%;
      margin: 0 10px;
    }
    .menu-form {
      display: flex;
      align-items: center;
      background: #eee;
      height: 25px;
      border-radius: 15px;
    }
    .menu-search-icon {
      background: url(https://img.ixintu.com/download/jpg/201911/7c07132cea5e6235d2e416f51b23ca95.jpg!con0);
      background-repeat: no-repeat;
      background-size: contain;
      width: 12px;
      height: 12px;
      -webkit-flex: none;
      flex: none;
      margin-left: 6px;
      margin-right: 4px;
    }
    .menu-search-text {
      font-size: 11px;
      color: #858687;
      text-align: center;
      margin-right: 10px;
    }
  }
  